- 31 Mar, 2021
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Atomic Spectra
Write your answers for this post-lab in a new Word document.
• Include a heading with your name, date, and section number at the top of the page.
• Include section headings for each section of your post-lab report. (Data, Calculations, etc.).
• Number your answers with the corresponding question number.
• Save your document as a PDF and upload to the submission area for this assignment.
Don’t re-write the questions when you go to address these questions and topics. Just make sure your answers
have numbers that match up to the original questions’ numbers.
Unless specified otherwise, you must show your work for all calculations. Unless you are only performing a simple
addition or subtraction, you must use Word’s equation editor (or the equivalent if you are not using Word) for
this. You can’t write your work on a piece of paper, take a picture of the paper, and insert the picture.
Data/Procedure
1. You will have received a separate document containing some of the data you need. This document
contained a number in its file name that indicated which data set it was, e.g., “Lab Measurements Data 1.”
Say the number of the set you received.
Data & Post-Lab Questions
1. Explain the theory behind atomic excitation; that is, what do you do to an atom to get it to give off light,
and what happens in the atom that causes it to give off the light?
2. Consider the following two light sources. The one on the left is a sodium vapor streetlight, and the one on
the right a neon sign. Why are these two lights different colors?